Question

(5а-3)+(8а+16) при а=1;2;3.

Answer 1

1)a=1
(5•1-3)(8•1+16)
(5-3)•(8+16)
2•24=48
Ответ :48
2)а=2
(5•2-3)(5•2+16)
(10-3)•(16+16)
7•32=224
Ответ: 224
3) а=3
(5•3-3)(5•3+16)
(15-3)•(24+16)
12•40=480
Ответ: 480

Answer 2

(5*1-3)+(8*1+16)=2+24=26
(5*2-3)+(8*2+16)=7+32=39
(5*3-3)+(8*3+16)=12+40=52

Answer 3

To evaluate the expression (5a-3)+(8a+16) for the values of a = 1, 2, and 3, we can substitute each value of a into the expression and perform the calculations.

Let's calculate it step by step:

For a = 1: (5(1)-3)+(8(1)+16) = (5-3)+(8+16) = 2+24 = 26

For a = 2: (5(2)-3)+(8(2)+16) = (10-3)+(16+16) = 7+32 = 39

For a = 3: (5(3)-3)+(8(3)+16) = (15-3)+(24+16) = 12+40 = 52

Therefore, when a = 1, the expression evaluates to 26. When a = 2, it evaluates to 39, and when a = 3, it evaluates to 52.